TIG welder EXPERT TIG 320 AC/DC

EXPERT TIG 320 AC/DC +TIG torch 8m remote control

Inverter welder for welding using TIG and TIG PULSE methods with alternating current (AC) and direct current (DC) with non-contact (HF) arc ignition and MMA method with coated electrode using direct current (DC). Power supply 3x400V, welding current 10 - 320A, cooler.

 

Technical parameters

EXPERT TIG 320 AC/DC is a power source made in IGBT technology, designed for welding using TIG and TIG PULSE methods with alternating current (AC), direct current (DC), and MMA method with coated electrode (DC) and (AC).  Its small size and weight make the device perfect for both workshop and field work.

The device has welding modes: TIG DC, TIG DC PULSE, TIG AC, TIG AC PULSE, MMA AC, MMA DC.

The function TIG DC and TIG DC PULSE is used for welding stainless steel, carbon and low-alloy steels, copper, and titanium.

The function TIG AC and TIG AC PULSE: allows welding of aluminium and its alloys as well as brass.

TIG 2-LEVEL function: "2-level" current regulation allows switching between higher and lower current levels by pressing the button on the welding torch.

TIG SPOT function: allows tacking of thin materials. 

Thanks to the regulation of TIG PULSE pulsed welding parameters we can influence the shape of the weld and the focus of the arc. Pulsed welding also allows reducing the amount of heat delivered to the material and is used when welding thin materials.

Arc ignition occurs in non-contact mode (HF) or contact mode (LIFT). The LIFT function is used when welding in an environment with a high risk of electromagnetic interference affecting the surroundings.

Both with non-contact HF ignition and contact LIFT ignition, we have the option to choose the button function on the TIG torch between working in 2-stroke or 4-stroke mode (button lock for long welds).

A clear and easy-to-use digital control panel allows precise device regulation, ensuring stable parameters and high welding quality.

The device has 9 user welding program memory slots.

Digital displays facilitate the adjustment of welder parameters:

• initial shielding gas flow
• initial current
• current rise time
• welding current
• base current
• current fall time
• final current
• final shielding gas flow
• pulse length
• pulse frequency
• AC balance
• AC frequency
• HOT START value
• ARC FORCE value 

From the control panel, we can select the AC voltage waveform:

• TIG AC – triangular voltage waveform
• TIG AC – rectangular voltage waveform
• TIG AC – sinusoidal voltage waveform

The welder also has functions that facilitate the welding process using the MMA coated electrode method:

ARC FORCE: short-circuit current regulation (manual) - facilitates the transfer of the molten electrode drop to the welded material, preventing arc extinction when the electrode drop contacts the weld pool

HOT START: hot start regulation (manual) - facilitates electrode ignition by providing a higher welding current at each arc ignition.

ANTI STICK: anti-short-circuit - automatically turns off the welding voltage if the electrode sticks to the welded material, making it easier to detach and preventing accidental arc ignition

Physical parameters

The device has a cooler which significantly increases its efficiency and protects the torch from overheating.

The quick connector for connecting the gas to the welding torch allows immediate connection and disconnection of the welding torch without tools.

The device is equipped with overload protection, which increases its reliability.

Power parameters

Three-phase power supply 3x400 V.

The device is not equipped with a power plug.

Equipment

The delivery includes the device with a set of TIG and MMA accessories: TIG 18 welding torch with remote control 8 metres long, MMA electrode cable 3m long, ground cable 3m long, trolley, and cooler.

Warranty conditions

12-month warranty for professional use. 

PHYSICAL PARAMETERS

Device / set weight 31 / 90 kg

Radiator packaging dimensions L x W x H 770x260x370 mm

Device packaging dimensions L x W x H 740x280x460 mm

Trolley packaging dimensions L x W x H 1110x510x270 mm

 

TECHNICAL PARAMETERS

AC balance -5 ~ +5 %

Current rise time (s) 0 - 10 s

Current fall time (s) 0 - 10 s

AC frequency 50 - 250 Hz

Pulse frequency Hz 0.5 - 999 Hz

Pulse length (%) 5 - 95 %

Post gas (s) 0 - 10 s

Pre gas (s) 0.1 - 2 s

Power 11.5 kW (TIG) / 16kW (MMA)

Open circuit voltage 61 V

Base current in pulse 10 - 320 A

Final current 10 - 320 A

Current at 100% duty cycle 250 A

Current at 60% duty cycle 320 A

Starting current 10 - 320 A

Welding electrode diameter 1.6 - 6.0 mm

Welding current adjustment range 10 - 320 A

 

POWER SUPPLY PARAMETERS

Power supply protection C20A (TIG) / C25A (MMA)